DSSSB · Reasoning

If ‘P’ means ‘÷’, ‘Q’ means ‘+’, ‘R’ means ‘×’ and ‘S’ means ‘-’, then what will come in place of the question mark (?) in the following equation? 8 R 1 Q 21 P 7 S 14 = ?

  1. 6
  2. -3
  3. 7
  4. -4
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